FeelThere Legacy screens gone black

I installed the Wilco/FeelThere Legacy from the disc and everything was working perfectly until sometime today, something changed and when I loaded the plane, all the screens were black.i un-installed the plane and then re-installed it but I still have the same problem. I thought perhaps I hadn't done a complete enough job of uninstalling the plane so I went into the FSX main folder and deleted the Feelthere folder as well. I re-booted the pc, re-installed the plane, but still--I have blank screens.Can anyone tell me where I've overlooked something?